New Perspectives on Computer Concepts 2013: Comprehensive 15th Edition by June Jamrich Parsons,Dan Oja

Exercise 9

You've downloaded a movie from a new online store. You can watch it on your computer; but when you try to watch it on a large-screen television, you don't get a picture. You know the television is working, so you guess that the movie is protected by that requires all devices to be compliant.